Metric Series Tapered Roller Bearings

**Introduction to NSK’s Metric Series Tapered Roller Bearings: Precision, Durability, and Performance**

In the demanding world of industrial machinery, automotive systems, and precision equipment, the reliability and efficiency of rotating components are critical. NSK’s **Metric Series Tapered Roller Bearings** stand at the forefront of precision motion and control technologies, delivering exceptional load capacity, rigidity, and longevity in high-performance applications. Engineered with advanced materials and precision manufacturing techniques, these bearings are designed to handle combined radial and axial loads while maintaining smooth operation under extreme conditions.

### **Technical Features and Design Excellence**
NSK’s Metric Series Tapered Roller Bearings are meticulously crafted to meet the stringent demands of modern industrial and automotive applications. Key features include:

– **Optimized Roller and Raceway Geometry**: The tapered design ensures uniform stress distribution, reducing edge loading and extending service life.
– **High-Grade Materials**: Manufactured from premium steel alloys with advanced heat treatment processes, these bearings offer superior wear resistance and fatigue strength.
– **Precision Ground Surfaces**: Ultra-smooth raceways and rollers minimize friction, ensuring efficient power transmission and reduced energy loss.
– **Robust Cage Designs**: Options include pressed steel, machined brass, or polymer cages, each selected for optimal performance in specific operating environments (e.g., high speeds, corrosive conditions).
– **Sealing and Lubrication Options**: Configurations with integrated seals or shields protect against contamination, while specialized grease formulations enhance performance in high-temperature or high-speed applications.

### **Performance Advantages**
NSK’s tapered roller bearings excel in applications where reliability and precision are non-negotiable:

– **High Load Capacity**: The tapered geometry allows for simultaneous handling of heavy radial and thrust loads, making them ideal for gearboxes, wheel hubs, and heavy machinery.
– **Enhanced Rigidity and Stability**: Precision alignment ensures minimal deflection under load, critical for applications like machine tool spindles and industrial drivetrains.
– **Extended Service Life**: Advanced fatigue-resistant materials and optimized lubrication systems reduce maintenance intervals and downtime.
– **Energy Efficiency**: Low friction design contributes to reduced power consumption, aligning with modern sustainability goals.

### **Typical Applications**
NSK’s Metric Series Tapered Roller Bearings are widely used across industries, including:

– **Automotive Systems**: Wheel bearings, differential assemblies, and transmission systems benefit from their durability and load-handling capabilities.
– **Industrial Machinery**: Conveyors, crushers, and mining equipment rely on these bearings for their ability to withstand shock loads and harsh environments.
– **Precision Equipment**: Machine tools, robotics, and aerospace actuators demand the high rigidity and accuracy that NSK’s tapered roller bearings provide.

By combining cutting-edge engineering with decades of expertise, NSK ensures that its Metric Series Tapered Roller Bearings deliver unmatched performance, reliability, and efficiency—making them the preferred choice for engineers and manufacturers worldwide. Whether in high-speed automotive drivetrains or heavy industrial gearboxes, these bearings are built to excel under pressure while maintaining precision and longevity.

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Designations Nominal Dimensions Basic Load Ratings
d
mm
D
mm
T
mm
B
mm
C
mm
Cone r (min.)
mm
Cup r (min.)
mm
Cr
N
C0r
N
HR30220J
100
180
37
34
29
3
2.5
315000
330000
HR32220J
100
180
49
46
39
3
2.5
400000
450000
HR33220J
100
180
63
63
48
3
2.5
505000
635000
HR30320J
100
215
51.5
47
39
4
3
520000
525000
HR31320J
100
215
56.5
51
35
4
3
475000
505000
HR32320J
100
215
77.5
73
60
4
3
695000
755000
HR32921J
105
145
25
25
20
1.5
1.5
146000
212000
HR32021XJ
105
160
35
35
26
2.5
2
250000
340000
HR33021J
105
160
43
43
34
2.5
2
315000
435000
HR32214J
70
125
33.25
31
27
2
1.5
194000
205000
HR33214J
70
125
41
41
32
2
1.5
257000
299000
T7FC070
70
140
39
35.5
27
3
3
219000
235000
HR31314J
70
150
38
35
25
3
2.5
236000
229000
HR30314DJ
70
150
38
35
25
3
2.5
236000
229000
HR30314J
70
150
38
35
30
3
2.5
279000
268000
HR32314J
70
150
54
51
42
3
2.5
370000
390000
HR32314CJ
70
150
54
51
42
3
2.5
345000
390000
HR32915J
75
105
20
20
16
1
1
89000
120000
HR32015XJ
75
115
25
25
19
1.5
1.5
134000
171000
HR33015J
75
115
31
31
25.5
1.5
1.5
163000
220000
HR33115J
75
125
37
37
29
2
2
224000
275000
HR30215J
75
130
27.25
25
22
2
1.5
176000
182000
HR32215J
75
130
33.25
31
27
2
1.5
203000
219000
HR33215J
75
130
41
41
31
2
1.5
265000
315000